Hello,
Thank you for contacting the support and we regret the inconvenience caused.
Firstly, we recommend increasing the PHP values to at least the below ones, if you do not already have them:
PHP Memory Limit: 512M
Max input time: 150
PHP time limit: 120
PHP max input variables: 1000
You can get in touch with your web host regarding this.
Coming back to the issue, we only add tabs in the Titles & Meta settings when we detect a new post/taxonomy type. If you’ve not added those taxonomies, some other plugin/theme might be adding them. You can determine that by following this guide troubleshooting guide: https://rankmath.com/kb/check-plugin-conflicts/
Here is a video you can follow as well: https://www.youtube.com/watch?v=FcIWRhcUP2c
Only the site admin would know and your users won’t be affected by this troubleshooting.
If the issue persists, please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
Please do take a complete backup of your website before sharing the information with us.
We really look forward to helping you.